Yarn carrier for knitting machines



Jan. 1Q, @9330 5, SPECTQR 1,893,838

YARN CARRIER FOR KNITTING MACHINES Filed Aug. 22. 1930 K2 I INVENT. W 5WZFW 7 W ATTORNEYS.

' UNITED STATES PATENT OFFICE :Bmmmm arnc'ron, or new YORK, n. Y.,ASSIGNOR T0 enorrmz. sroar Arum co., me, or NEW YORK, 1v. Y., aconroRArIoN on NEW YORK YARN CARRIER FOR KNITTING MACHINES Applicationfiled August 22, 1930. Serial No. 477,018.

This invention relates to yarn carriers for knitting machines and moreparticularly to yarn carriers adapted for use in the production ofplated fabric.

An object of the invention is to prov1de a device of the characterdescribed whlch' is simple and sturdy in construction, which ma bemanufactured economically, which is e fective under a variety ofoperating conditions, and which will efficiently accomphsh the purposesfor which it is intended.

A further object is to provide improved means for reversing the positionof the yarns in the production of plated fabric on a flat knittingmachine. 0

More specifically, it is an object of the 1nvention to provide means toasslst the movement of one yarn about another yarn when the direction ofthe movement of the yarn carriers is reversed in the production ofplated fabric on a fiat knitting machine.

Other objects of the invention will in part be obvious and will in partappear hereinafter.

The invention accordingly comprises the features of construction,combinations of elements, and arrangement of parts, which will beexemplified in the constructions hereinafter set forth and the scope ofthe apphcation of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description taken inconnection with the accompanying drawing, in which:

Figure 1 is a front view of a portion of aflat knitting machine showinga yarn carrier embodying the invention as it appears when moving in onedirection;

Fig. 2 is a similar view showing the yarn carrier as it appears whenmoving in the op osite direction;

ig. 3 is a top view of the exemplified yarn carrier;

Fig; 4 is a side view thereof, showing certain associated elements;

Fi 5 is a detail side view illustrating a modi ed form of construction;

Fig. 6 is a detail bottom view of this conoperating cams is reversed atthe end of each course, the relative position of yarns must becorrespondingly reversed, and to permit such reversal, there 1s commonlyutilized a member such as shown at 10 which provides a small opening forone of the yarns and provides for the other of the yarns a generallyarcuate opening terminating at either side of the small opening, so thatupon the reversal of the movement of the guiding member, the yarnextending through the arcuate opening will, due to its lag, passrearwardly along the entire length of the arcuate opening, so as tooccupy a position at the rear of the first yarn. Considerable difficultyhas been experienced in the failure of yarn to move with speed andcertainty along the course provided by the arcuate opening, and this isparticularly the case in the use of relatively thick yarns of irregularwidth, for example, knotted yarns, such as boucl yarn and rattin yarn.This disadvantage is enhanced by the knitting and structuralrequirements involved in most knitting methods and machines which limitthe size and shape of the slot.

With these and other considerations in View, the present inventioncontemplates the provision of a supplemental guiding member which willcause the yarn to move from one end of the arcuate opening to the otherwith ease and certainty, and further contemplates the provision ofpositive means for reversing the position of the yarns. The exemplifiedyarn carrier comprises a guiding member 10 formed with a small opening11 adapted to guide a yarn 12 and with an arcuate opening 13 adapted toguide a yarn 14. The member 10 is supported on a suitable frame piece 15which in the present instance is formed with a supplemental guideopening 16 for the yarn 12. In accordance with the invention, there ispivotally mounted, as by means of a screw 17 at a point in line with andin front of the opening 16, a swinging member 18 formed at its outer endwith an openin 19 for the yarn 14, the distance between he openings 16and 19 when the member 18 extends to one side, being considerablygreater than the distance between the opening 11 and either end of theslot 13. The yarn 12 may extend over a suitable sliding pulley 20 to aspool 21 and the yarn 14 may extend over a suitable sliding pulley 22 toa spool 23.

It will accordingly be seen that when the direction of movement of theyarn carrier is reversed, the lag of the yarn 14 will cause the pivotedmember 18 to swing to the rear and the tension on the yarn 14 resultingfrom the movement of the pivoted member, will assure a speedy and directmovement of the yarn 14 from one end to the other of the slot 13; thereversal of this action resulting when the yarn carrier changes itsdirection of movement at the other end of the machine. The are throughwhich the opening 19 swings is sufiicient to cause an effective pullwhich will overcome any resistance due to friction of the yarn againstthe walls of the slot 13, so that the yarn 14 when it is received by theneedles will always be at the rear of the yarn 12 and that the danger ofthe yarn 14 eing frictionally held ahead of the yarn 12 with resultingimperfections in knitting, is effectively eliminated.

In certain instances, as when the entering yarn exerts a pull inwardly,suitable means may be provided to limit the movement of the free ends ofthe pivoted member in a direction toward a member such as 10. Such aresult may be obtained, for example, by so constructing the pivotedmember that the distance from the axis of the pivot pin to the sideedges of the pivoted member is greater than the distance from the axisto its inner edge, and by interposing a protruberance between the inneredge of the pivoted member and the guide opening for the rear yarn. Thismay be so arranged that the arc of movement of the free end of thepivoted member is a semicircle or less, as desired. One such arrangementis exemplified in Figs. 5, 6 and 7. In this instance, there is shown aswinging member 1811 pivotally mounted on a frame piece 15a by means ofa screw 17a. The inner surface of the member 18a, as indicated at 24, isso constructed that the distance from its axis to the side edges thereofis greater than the distance from its axis to its inner edge and thereis interposed between this inner edge and the guide opening 16a for theinner yarn, a protuberance 25 which, in the present instance, is shownas a part of an annulus 26. As is indicated in Fig. 7, the protuberance25 limits the inward movement of the outer end of the member 18a.

Since certain changes may be made in the above construction anddifferent embodiments of the invention could be made without departingfrom the scope thereof, it is intended that all matter contained in theabove description or shown in the accompanying drawing shall beinterpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended tocover all of the generic and specific features of the invention hereindescribed, and all statements of the scope of the invention which as amatter of language might be said to fall therebctwecn.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is:

1. In a yarn carrier adapted for use in the production of plated knitfabric, the combination of an outwardly extending arm providing a yarnguide for one yarn, and an arm having its inner end pivotally connectedwith the outer end of the aforesaid arm and at its outer end providing ayarn guide for another yarn, the free end of said pivoted arm beingadapted to swing freely to a position at the rear of said firstmentioned yarn guide each time the direction of movement of the yarncarrier is reversed, said free end being formed with an eyelet for saidother yarn.

2. In a yarn carrier adapted for use in the production of plated knitfabric, the combination of an outwardly-extending arm providing a yarnguide for one yarn, and means providing a yarn guide for another yarn,the latter guide comprising an arm pivotally connected at its inner endwith the aforesaid arm in a transverse vertical plane intersecting thefirst mentioned arm and having at its free end an eyelet for said otheryarn.

3. In a yarn carrier adapted for use in the production of plated knitfabric, the combination with means providing a small opening for theguiding of one yarn and an arcuate slot extending at both sides of saidsmall opening and adapted to guide another yarn, of an outwardlyextending arm disposed above the aforesaid means and having an openingfor guiding the first-mentioned yarn, and an arm pivotally mounted onthe outer end of the outwardly extending arm and having an opening forguiding said other yarn in its outer end at a point adapted to swingbeyond each side of said slot, whereby the movement of a am from oneside of said slot to the other si e on the reversal of the yarn carrierwill be facilitated.

4. In a yarn carrier adapted for use in the production of palted knitfabric, the combination with means providing a small opening for theguiding of one yarn and an arcuate slot extending at both sides of saidsmall opening and adapted to guide another yarn, of a vertical armextending upwardly from said means, an arm extending outwardly a shortdistance from the upwardly extending arm and formed with an openingproviding a supplemental guide for said one yarn, means providing asupplemental guide for said other yarn disposed above said arcuate slotand I comprising an arm pivotally connected at its inner end with theouter end of said outward- 1y extending arm and formed with an open ingat its outer end for said other yarn and adapted to accentuate thenormal lag of said other yarn to overcome frictional resistance in saidarcuate slot.

5. In a yarn carrier adapted for use in the production of plated hiitfabric, the combination of means providing a yarn guide for one yarn,means providing a yarn guide for another yarn, the latter guidecomprising a pivoted member, the free end of which is adapted to swingto a position at the rear of said first mentioned yarn guide each timethe direction of movement of the yarn carrier is reversed said free endbeing formed with an eyelet for said other yarn, and means to limit themovement of said pivoted member to confine its movement to an are notgreater than a semicircle, the inner end of said pivoted member being soconstructed that the distance from its pivotal axis to the side edges ofthe pivoted member is greater than the distance from said axis to theinner edge of the pivoted member,

and said limiting means com rising a protuberance carried by therst-mentioned means and disposed inwardly of said pivoted member. 7

In testimony whereof I afix my signature.

BENJAMIN SPEOTOR.

